Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: question: Bronze of 2, and a Silver smaller than 0 then what is the sum of the gold?
 ###Tabelas: CREATE TABLE qualification_round (qualification_round_id AUTO_INCREMENT PRIMARY KEY, Rank INT, Athlete VARCHAR, Country VARCHAR, Day 1 INT, Total VARCHAR) CREATE TABLE season_two:_1999-2000 (season_two:_1999-2000_id AUTO_INCREMENT PRIMARY KEY, Series Number INT, Season Number INT, Episode Title VARCHAR, Premiere Date VARCHAR, Production Code INT) CREATE TABLE champions_tour_wins_45 (champions_tour_wins_45_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Tournament VARCHAR, Winning score VARCHAR, Margin of victory VARCHAR, Runner(s)-up VARCHAR) CREATE TABLE medal_table (medal_table_id AUTO_INCREMENT PRIMARY KEY, Rank VARCHAR, Nation VARCHAR, Gold INT, Silver INT, Bronze INT, Total INT) CREATE TABLE academy_graduates_2000–present (academy_graduates_2000–present_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Current Club VARCHAR, Born VARCHAR, Debut VARCHAR, Manager VARCHAR)  
SELECT SUM Gold FROM medal_table WHERE Bronze = 2 AND Silver < 0